Ared candle is 8 inches tall and burns at a rate of 7/10 inch per hour. a blue candle is 6 inches tall and burns at a rate of 1/5 inch per hour. after how many hours will both candles be the same height?

! will with similar problems.

After 4 hours both candles be at the same height .

Explanation:

Since we have given that

Height of red candle = 8 inches

Rate at which red candle is burning is given by

Height of blue candle = 6 inches

Rate at which blue candle is burning is given by

Let 'y' be the height of both the candles after burning

Let 'x' be the amount of time it burns in hours.

So, equation for red candle be

equation for blue candle be

According to question, we get

Hence, after 4 hours both candles be at the same height .

what i would say the best answer is a. 40.5